<template>
  <div class="login">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" label-position="left" label-width="0px" class="login-form">
      <h3 class="title">{{ webName }}</h3>
      <el-form-item prop="loginName">
        <el-input v-model="loginForm.loginName" type="text" auto-complete="off" placeholder="账号">
          <svg-icon slot="prefix" icon-class="user" class="el-input__icon" style="height: 39px;width: 13px;margin-left: 2px;" />
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input v-model="loginForm.password" type="password" auto-complete="off" placeholder="密码" @keyup.enter.native="handleLogin">
          <svg-icon slot="prefix" icon-class="password" class="el-input__icon" style="height: 39px;width: 13px;margin-left: 2px;" />
        </el-input>
      </el-form-item>
      <el-form-item prop="code">
        <el-input v-model="loginForm.code" auto-complete="off" placeholder="验证码" style="width: 63%" @keyup.enter.native="handleLogin">
          <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon" style="height: 39px;width: 13px;margin-left: 2px;" />
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode">
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button :loading="loading" size="medium" type="primary" style="width:100%;" @click.native.prevent="handleLogin">
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import Config from '@/config'
import { getCodeImg } from '@/api/base/login'
import Cookies from 'js-cookie'
export default {
  name: 'Login',
  data () {
    return {
      codeUrl: '',
      loginForm: {
        loginName: '',
        password: '',
        rememberMe: false,
        code: '',
        uuid: ''
      },
      loginRules: {
        loginName: [{ required: true, trigger: 'blur', message: '用户名不能为空' }],
        password: [{ required: true, trigger: 'blur', message: '密码不能为空' }],
        code: [{ required: true, trigger: 'change', message: '验证码不能为空' }]
      },
      loading: false,
      redirect: undefined,
      webName: Config.webName
    }
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  created () {
    this.getCode()
    this.getCookie()
  },
  methods: {
    getCode () {
      getCodeImg().then(res => {
        this.codeUrl = 'data:image/gif;base64,' + res.img
        this.loginForm.uuid = res.uuid
      })
    },
    getCookie () {
      const loginName = Cookies.get('loginName')
      let password = Cookies.get('password')
      const rememberMe = Cookies.get('rememberMe')
      password = password === undefined ? this.loginForm.password : password
      this.loginForm = {
        loginName: loginName === undefined ? this.loginForm.loginName : loginName,
        password: password,
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
        code: ''
      }
    },
    handleLogin () {
      this.$refs.loginForm.validate(valid => {
        const user = this.loginForm
        if (valid) {
          this.loading = true
          if (user.rememberMe) {
            Cookies.set('loginName', user.loginName, { expires: Config.passCookieExpires })
            Cookies.set('password', user.password, { expires: Config.passCookieExpires })
            Cookies.set('rememberMe', user.rememberMe, { expires: Config.passCookieExpires })
          } else {
            Cookies.remove('loginName')
            Cookies.remove('password')
            Cookies.remove('rememberMe')
          }
          this.$store.dispatch('Login', user).then(() => {
            this.loading = false
            this.$router.push({ path: this.redirect || '/' })
          }).catch(() => {
            this.loading = false
            this.getCode()
          })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss" scope>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url(../../assets/background/background.png);
  background-size: cover;
}
.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: skyblue;
  width: 380px;
  padding: 25px 25px 5px 25px;
  .el-input {
    height: 38px;
    input {
      height: 38px;
    }
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 32%;
  display: inline-block;
  height: 38px;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
</style>
